Means for holding switch-tongues.



PATENTED JULY 17, 1906.

- 11. 1;. BNTWISLE. v

MEANS FOR HOLDING SWITCH TONGUES.

APPLIOATION FILED MAR. 18, 1905.

4M iim az Mwz/ Nozems PETERS C014 wiuummow, u. c.

UNITED STATES PATENT OFFICE.

EDWARD B. ENTWISLE, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOB TO THE LORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed March 18,1905. Serial No. 250,753.

To aZl whom it may concern.-

Be it known that I, EDWARD BRADBUR-Y ENTwIsLE, of Johnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Improvement in Means for Holding Switch-Tongues, of which the following is a full, clear, and eXact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention has relation to means for retaining switch tongues or points in the position to which they are thrown, and more particularly to means which while holding the tongue or point to the desired position does not form a positive lock therefor, but leaves it free to be thrown by means of the usual switch-bar.

My invention is designed to provide a device of this character which is in the nature of an improvement upon the device described and claimed in the patent to Korns, No. 784,689, dated March 14, 1905; and it consists in the novel construction, arrangement, and combination of parts, all substantially as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1 is a plan view of a portion of a switch-tongue, showing my invention applied thereto; Fig. 2, a section on the line 2 2 of Fig. l, and Fig. 3, a section on the line 3 3 of Fig. 1.

The letter A designates a movable switch tongue or point pivoted at a in the switch structure B. I

O is a suitable boX or casing secured to the structure B and containing the devices which operate to hold the tongue in its thrown position.

Connected to a depending lug a, of the tongue is an adjustable arm D, which extends laterally into the box C and is pivotally connected to the upper arm of a short lever E, whose intermediate ortion is pivoted on a stud e, supported by a lug or bracket 6. The lower portion of the lever E is forked, and this fork engages a stud f of a weight F, which is pivoted at f at a point above and to one side of the center of the studf.

In the drawings the tongue is shown as set for the straight track, and it will be readily seen that the position of the weight F is such as to hold the tongue in this position against accidental displacement. The tongue may, however, be thrown at any time by means of the usual bar byapplying sufficient force to the tongue to move the lever E to throw the weight over past center to the position shown in dotted lines in Fig. 3. In such position it acts to hold the tongue set for the branch track. The use of the intermediate lever E enables the arm D to be made straight, so as to secure a direct movement, and also increases the throw of the weight F.

The details of construction and arrangeinent may be changed without affecting my invention, and hence I do not wish to be limited to the specific embodiment of my invention which I have herein shown and de-.

scribed.

Having thus described my invention, what I claim asnew, and desire to secure by Letters Patent, is

1. The combination with a movable switch point or tongue, of a straight laterally-extending arm connected to said point or tongue, a pivoted weight, and a lever having one of its arms pivotally connected to said laterally-extending arm, and its other arm connected to the said weight eccentrically of the pivot of the weight.

2. The combination with a movable switch point or tongue, of a pivoted weight, a lever pivotally connected to said weight eccentrically of the pivot of the weight, and a connection between said lever and the said movable point or tongue.

In testimony whereof I have affixed my signature in presence of two witnesses.

EDWARD B. ENTWISLE.

Witnesses:

Lonnrro OCoNNnLL, H. W. SMITH. 

